JP5542909B2 - Method and apparatus for coating a catalyst carrier object in the absence of a catalyst on the outer surface - Google Patents

Description

  The present invention relates to a method and apparatus for coating a catalyst support object. In particular, the invention relates to a mechanism for preventing contact between the catalyst material introduced into the catalyst support body and the outer surface of the catalyst support body.

  The present invention provides that a monolithic catalyst support body is filled with catalyst material by providing a slurry (ie, a solid catalyst and liquid suspension), and the suspension, ie, slurry, is in a liquid state, the catalyst support. The present invention relates to a slurry-based coating method having a configuration that is introduced into an object. The liquid is then removed from the catalyst support body by drying and catalyst particles remain in the passages of the catalyst support body. Usually, the catalyst support material has a long shape, and linear passages extend linearly within the catalyst support body. The passage is surrounded by a closed outer surface. A closed outer surface surrounds the perimeter of the passage between the two open (open) ends of the catalyst support body, which are connected by the passage. This general structure allows for a simple mechanism for introducing slurry (slurry containing catalyst material) into the catalyst support body. One of the open ends is introduced into the slurry and at the same time a vacuum is applied to the opposite open end (open end), thereby drawing the slurry into the passage.

  The known prior art for introducing the catalyst material into the monolithic catalyst support body is based on the outline described above. Thus, prior art methods typically have the following steps: introducing the first open end of the support body into the slurry and drawing the slurry into the passage of the catalyst support body. However, since one of the free ends of the carrier object must be in contact with the slurry, a portion of the outer surface of the carrier object is wetted or coated with the slurry.

  First, the catalyst material will contain a noble metal that does not participate in the catalytic reaction. This is because the outer surface of the catalyst support material does not come into contact with the exhaust gas because of the canning surrounding the catalyst support material. Therefore, not all catalyst materials can be used effectively. In order to recover unused catalyst material, the outer surface of the support body is cleaned, brushed or blasted. In this way, some of the material is recovered and the outer surface can be provided clean. This is important if, for example, the canning coating includes welding. At the same time, however, the production of such a catalyst carrier object is relatively expensive due to the additional cleaning and recovery steps. Furthermore, not all unused material outside the carrier body is recovered.

  Accordingly, it is an object of the present invention to provide a mechanism for producing a catalyst carrier object in the absence of catalyst material on its outer surface.

(Outline of the Invention)
This object is achieved by a method and device as described in the independent claims of this application.

  The concept on which the present invention is based is actually achieved by a predetermined sealing element. This sealing element covers (on one end of the support material) the outer surface of the catalyst support body (with one end of the support material), so that the outer surface of the slurry and the support body is immersed while the part of the support body is immersed in the slurry Contact between the surfaces is prevented. The sealing element contacts the periphery of the input end of the catalyst support object during the coating process, i.e., while the input end is immersed in the slurry and while the slurry is applied to the inside of the catalyst support object (i.e. the passage). The sealing element covers (covers) the peripheral edge (periphery edge) of the (cylindrical) catalyst support body, or the vicinity of or near the input end of the catalyst support. In this way, contact between the slurry and the outer surface of the catalyst support body is prevented or minimized while at the same time the slurry in all the passages (with termination at the input end) in the support body. Is given.

  In one aspect of the present invention, the loading platform assembly of the present invention has a loading platform that holds a catalyst support object and a cover mechanism that includes a sealing element. The loading platform's (first) lifting mechanism covers the input end with the sealing element described above during application of the slurry into the carrier body. This lifting mechanism allows the sealing element to contact the peripheral edge (peripheral edge) of the input end (before the input end of the catalyst support object contacts the slurry) or around the input end of the catalyst support object or in the vicinity thereof. And maintain this contact between the sealing element and the carrier body throughout the coating process and after the coating process is complete until the input end is removed from the slurry. The sealing element and the catalyst support body are then removed from the slurry, and after this removal, the sealing element is released from the catalyst support body.

  The catalyst support body extends at the input end along a line defined by the peripheral rim of the catalyst support body. In other words, the contact line is defined in the form of a circle or other closed line at the input end by the peripheral part of the cross section of the carrier object. This line is defined by the peripheral edge of the (input) end of the carrier object. The sealing element extends radially (radially) towards its center and is ring-shaped and inclined towards the longitudinal axis (longitudinal axis) of the sealing element. The opening (opening) defined by the ring shape of the sealing element, i.e. the inner circumference of the ring, is smaller than the cross-section of the input end of the catalyst support body. The outer periphery of the sealing element surrounds a cross section that is larger than the cross section of the input end. In this way, the input end can be adapted to the sealing element, thereby covering the peripheral edge (and the outer surface of the catalyst support body) at the input end during the coating process. Thus, the width and shape of the sealing element is adapted to the cross section around the input end. The entire cross section of the input end can be in contact with the slurry. This is because the sealing element contacts the input end (at the input end and only at the peripheral end) and provides free access to the slurry in the (inner) cross section of the input end. In this way, the slurry is fed into the catalyst support body through the inner release (opening) of the sealing element.

  The sealing element has an inner surface or a closed edge. The surface or edge is adapted to the shape around the carrier object (at the input end of the carrier object). Furthermore, the sealing element extends along a closed line. In the particular case where the closed line is circular, the sealing element is annular. In corresponding embodiments, the closed line is oval or elliptical. The section perpendicular to the direction of the tangent of the sealing element has any shape, for example a trapezoidal shape, a circular shape, or a chamfered triangle (chamfered vertex), or any polygonal or oval shape Can do. The section perpendicular to the tangent direction of the sealing element tapers in the direction of the central axis of the sealing element.

  The sealing element contacts the catalyst support body only along the line defined by the periphery of the input end, so that even if the sealing element is covered with the slurry in the preceding coating process, it is outside the catalyst support body. No slurry is applied. In any case, the sealing element prevents the slurry from being applied on the outer surface of the carrier body and allows the entire cross section of the input end, ie the front part of the carrier body, to come into contact with the slurry.

  According to the invention, the beginning and the end of the coating process are synchronized with the fitting of the sealing element onto the input end. In particular, the operation of the sealing element is such that the sealing element is removed from the catalyst support body at the start of the immersion of the charging end into the slurry, so that the sealing element covers the charging end and when the dipping process is completed or afterwards. Is synchronized. Thus, by synchronization, the cover at the closing end sealing element is maintained as long as the closing end contacts the slurry. Furthermore, the sealing element can be maintained in contact with the input end prior to the dipping step and / or after the dipping step is completed.

  According to a first aspect of the present invention, there is provided a method of coating a catalyst support object, whereby a catalyst support object and a slurry disposed in a pan are provided and the open end of the catalyst support object is provided. Is introduced into the slurry. In this regard, a slurry is a suspension and / or solution of catalyst material formed by adding a liquid (preferably containing water) to the catalyst material. According to this method, after introducing the input end, a predetermined amount of slurry is guided through the input end and into the catalyst support material. In this regard, the inside of the catalyst support body includes a channel whose end is located at the input end of the catalyst support material. During the process of guiding the slurry through the open end, at least a portion of the periphery of the input end is covered (covered) with an impermeable sealing element. This prevents contact between the slurry and the outer surface around the catalyst support body. The outer surface around the catalyst carrier object is clear for the input end (and the discharge end of the catalyst carrier object). The slurry is fed through the input end of the inner surface of the catalyst support material. Furthermore, the slurry is fed through an impermeable sealing element. Here, the sealing element seals only the periphery of the input end, and allows the slurry to be guided to the input end through the release portion of the sealing element.

  The input end of the catalyst support material is introduced into the sealing element or pressed (pressed) against the sealing element and (before the step of introducing the input end into the slurry and preferably the slurry in the catalyst support material). The contact state is maintained during the guiding process. Furthermore, at the beginning of the step of introducing the input end (and sealing element) into the slurry, the input end is introduced into the sealing element or pressed onto the sealing element. This is because the sealing element is engaged with the input end to cover and the input end is introduced into the slurry together with the sealing element. The sealing element is maintained in direct contact with the input end during the entire process of introducing and maintaining the input end in the slurry. In other words, the periphery of the input end is covered by the sealing element for the entire duration of the process of introducing and maintaining the input end in the slurry. In particular, the sealing element covers the periphery of the input end while the slurry is guided into the catalyst support body.

  When the input end is immersed in a slurry arranged in a pan together with the sealing element, the input end of the catalyst support material is pressed over the sealing element or surrounded by the sealing element. It is. Throughout the entire process of immersing the input end in the slurry, the input end of the catalyst support material is pressed onto the sealing element (or vice versa) or surrounded by the sealing element.

  After the step of guiding the slurry, or when the step of guiding the slurry through the input end is completed, the sealing element and the input end are separated from each other. When the inlet end and the sealing element are removed from the slurry disposed in the pan, or after this (ie, after the step of immersing the inlet end in the slurry is complete), the sealing element and the input element are To be separated. This separation is effected by relative (translational) movement along the longitudinal axis (longitudinal axis) between the sealing and throwing element and by increasing the distance between the throwing end and the sealing element. . In particular, this separation is effected by lowering the sealing element, raising the input end, or both (thus increasing the distance between the input end and the sealing element).

  The step of guiding a predetermined amount of slurry is performed by applying a pressure difference between the input end of the catalyst carrier object and the discharge end of the catalyst carrier object. The discharge end of the catalyst support body is in fluid coupling with the input end via a plurality of passages in the catalyst support material. Preferably, the catalyst support body has a cylindrical (cylindrical) shape and the input end faces the discharge end. Due to the formation of the pressure difference, a predetermined amount of slurry flows from the pan through the inner release (opening) of the sealing element, through the input end to the discharge end. In this way, the inner surface of the passage in the catalyst support body is wetted or covered by the slurry, which contains the catalyst material. The passage fluidly connects between the input end and the discharge end. The fluid connection includes the inner surface of the carrier object. A slurry is applied on the inner surface formed by the inner passage.

  In accordance with the method of the present invention, the introducing step includes releasably holding the catalyst support object by the loading platform and reducing the distance between the loading platform holding the catalyst support object and the pan. By shortening the distance, the input end of the catalyst carrier object is immersed in a slurry arranged in a pan. This distance can be shortened by lowering the loading platform with the catalyst support object in the direction of the pan, raising the pan towards the loading platform, or both. The periphery of the input end is covered by a sealing element connected to the sealing holder. Thus, the sealing element is held and / or moved by holding or moving the sealing holder. Before and during the introduction of the input end, while the input end is immersed in the slurry, and when a predetermined amount of slurry passes through the input end, the inner surface of the catalyst carrier object (the inner surface is defined by the passage in the catalyst support object). While being guided in), the sealing holder presses the sealing element around the input end. After the guiding process is completed and the contact between the input end and the slurry placed in the pan is finished, the sealing holder separates the sealing element from the input end. Thus, after the dipping is complete, the sealing holder separates the sealing element, this separation by lowering the sealing holder relative to the loading platform and the catalyst support body and the loading platform and the catalyst support body. It can be done by raising against the pan or by both of these actions. These movements are preferably parallel movements.

  In accordance with a second aspect of the present invention, a loading platform assembly is used that includes a loading platform that is used to releasably hold a catalyst support object. The loading platform further includes a cover mechanism having a sealing holder and a ring-shaped sealing element (described above) provided on the sealing holder. The cover mechanism further includes a first lifting mechanism coupled to the sealing holder, wherein the first lifting mechanism is along the longitudinal axis (vertical axis) of the sealing element relative to the loading platform. Used to give action. In other words, the first lifting mechanism gives the loading platform a direction of movement along the longitudinal axis of the sealing element for the sealing holder. Thus, the first lifting mechanism moves the sealing element against the loading platform (by moving a sealing holder provided with the sealing element) and thus against the catalyst carrier object releasably held by the loading platform. Used to move up and down.

  According to a third aspect of the present invention, a coating station is used to apply a predetermined amount of slurry to the interior of the catalyst support body (ie, the inner surface provided by the passages in the catalyst support body), where The coating station includes a loading platform as described above or as claimed in claim 7. The coating station includes a pan in which the slurry is placed. The coating station has a second lifting mechanism, which immerses the input end of the catalyst carrier object held releasably by the loading platform in a slurry arranged in the pan. In order to do this and to remove it from the slurry, a relative motion is provided between the pan and the loading platform. The second lifting mechanism moves the loading platform (by lowering and raising the loading platform relative to the pan, or by lowering and raising the pan relative to the loading platform, or both of these actions). Used to lower and raise relative to the pan. Preferably, the second lifting mechanism is provided in a pan (having a fixed position with respect to the direction of movement provided by the second lifting mechanism) and is raised and lowered relative to the loading platform.

  The coating platform or loading platform, or both, includes a synchronizer, which synchronizes the first lifting mechanism to the second lifting mechanism (mechanical, hydraulic, pneumatic, or electrical). In this manner). Thus, the actions provided by the first and second lifting mechanisms are synchronized with each other. In this regard, synchronization is not limited to simultaneous operation. Synchronization also includes the coordinated actuation of both lifting mechanisms (which can also be delayed in operation). In particular, the lifting action of the second lifting mechanism (moving the pan towards the catalyst carrier object held by the loading platform) is performed by the synchronization device (pressing the sealing element against the input end and maintaining it at the input end, It can be synchronized with a predefined delay (of the first lifting mechanism). In this way, the synchronizer ensures that the sealing element covers the periphery of the dosing end when the catalyst support object is immersed in the slurry placed in the pan. Similarly, the lowering action of the first lifting mechanism is delayed relative to the action of the second lifting mechanism when the second lifting mechanism lowers the pan by the synchronizer and the slurry in the pan Is separated from the closing end with a preset delay time (before the first lifting mechanism lowers the sealing element), and the sealing element is separated from the periphery of the closing end. In addition, the synchronizer can adjust the time and speed of operation, for example, slow operation of the first lifting mechanism delays physical separation of the sealing element from the periphery of the input end. Preferably, the synchronization device comprises a circuit, preferably a digital circuit, or a programmable circuit (with software for controlling an electrical, electro-aerodynamic or electro-hydraulic actuator), The first and second lifting mechanisms individually have actuators (each actuator can be individually controlled by a synchronization device). The mechanical synchronization device can have a suspension, for example an aerodynamic or hydraulic cylinder, or a dashpot. These delay and slow the operation and thus delay the point at which the first lifting mechanism physically separates the sealing element from the periphery of the input end, or the second lifting mechanism The point of time when the slurry disposed inside is brought into contact with the input end of the catalyst carrier object is delayed.

  Typically, the first lifting mechanism coupled to the sealing holder includes individual actuators that can be controlled separately for any actuator of the pan or loading platform. This means that the first lifting mechanism is (negatively or positively) related to the second lifting mechanism (which makes the input end contact the slurry in the pan or separates the input end from the slurry placed in the pan). To be able to work late (ie late or ahead) in time.

  The sealing element preferably has a ring shape, for example an oval, circular or polygonal ring shape. The sealing element includes a lip having a shape that is applied to the shape of the sealing element. The lip preferably has the same geometric shape or proportion as the sealing element, except for certain dimensions. In accordance with the present invention, the lip is in direct contact with the input end, preferably entirely around the input end (ie, 360 °) when the sealing element covers the periphery of the input end. In cross section, the lip is inclined and does not extend in the exact radial direction towards the center of the sealing element. However, the lip extends away from the loading platform and extends toward the pan. The lip is applied at the input end of the catalyst carrier body so as to contact the entire circumference of the outer circumference of the catalyst carrier body (ie, 360 °). In this way, the lip does not extend exactly in the plane in which the sealing element extends. Rather, the direction in which the lip extends toward the center of the sealing element is inclined in the exact radial direction (radial direction). Thus, the sealing element is in the form of a ring having an outer and inner perimeter, where the inner perimeter coincides with the inner edge (inner edge) of the lip. The plane on which the outer periphery extends is parallel to the periphery on which the inner periphery extends. The plane extending the inner perimeter is moved to the plane extending the outer perimeter so that it moves along the longitudinal axis of the sealing element in the direction of the pan and away from the catalyst support body (ie away from the loading platform). Made. In this direction, i.e. away from the loading platform, the sealing element tapers. The inner cross section decreases as the distance between the cross section and the loading platform increases. The sealing element is a frustum that tapers in the direction of the bread.

  A coating station according to the present invention includes a movable vacuum hood that is in sealing contact with the loading platform on the upper side of the loading platform and that evacuates the volume enclosed by the hood and the upper side of the loading platform. In this way, a vacuum is applied to the upper section of the catalyst support material and to the discharge end of the catalyst support object (opposite the input end of the support object). The vacuum hood can be coupled to a third lifting mechanism, and the third lifting mechanism is preferably coupled to the synchronization device. The step of guiding a predetermined amount of slurry to the input end is directly related to the step of applying a vacuum, and the start of vacuum formation is equal to the start of the step of guiding the slurry into the catalyst support body. The completion of the vacuum formation by the vacuum hood is also the end of the step of supplying the slurry to the catalyst carrier object. In this way, the step of guiding the slurry can also be replaced by a suitable step of applying a vacuum to the discharge end of the catalyst carrier object within the volume enclosed by the upper side of the hood and loading platform.

  The second lifting mechanism is preferably coupled to the pan to controllably move the pan toward the lower side of the loading platform (which is opposite the upper side of the loading platform). Further, the second lifting mechanism moves the pan away from the underside of the loading platform along a relative direction of movement between the pan and the loading platform. In general, all of the lifting mechanisms, lifting devices and actuating devices described above constitute a translational movement (translation) for approaching / releasing the loading platform / sealing element / pan rather than a rotational movement. Preferably, the translational motion is a motion along the direction of gravity. However, a moving mechanism coupled to the loading platform and / or the vacuum hood can be used for pivoting and / or translational operations.

  The coating synchronization device of the present invention is applied to coordinate the operation of the first and second lifting mechanisms (and the third lifting device, if appropriate). This is because if the first lifting mechanism does not constitute a sealing contact between the sealing element and the catalyst carrier object held on the loading platform at a particular point in time, the pan and loading platform This is to prevent further approach beyond a preset distance due to the operation of the second lifting mechanism in between. Thus, the synchronization device can include a block device or provide a block function. These block the access of the catalyst support body to the slurry arranged in the pan if the sealing element does not cover the input end. This is done by controlling the actuating devices of the first and second lifting mechanisms using a block device or block function. Similarly, the blocking device, or block function, releases or separates the sealing element from the input end if the input end (and preferably also including the sealing element) should not leave the slurry disposed in the pan. Can be provided to block. These block functions can also be provided by an enabling device (WO2010 / 108940). This realization device enables (realizes) the operation of the first and / or second lifting mechanism only if the operation does not cause undesirable contact between the input end and the slurry. In this regard, undesired contact is contact between the input end and the slurry in the pan when the input end is not covered by the sealing element. In this regard, if the first lifting mechanism does not constitute a sealing contact between the sealing element and the catalyst carrier object held by the loading platform, ie a sealing contact between the sealing element and the periphery of the input end And when the second lifting mechanism is activated to reduce the distance between the pan and the loading platform, the synchronizer of the coating station activates the first lifting device so that the input end of the sealing element Used to start the approaching action.

  The second lifting mechanism is used to move the pan along the ascent direction, away from the loading platform and toward the loading platform. Here, the loading platform is fixedly arranged with respect to the movement along the rising direction. Furthermore, the loading platform is supported so as to be pivotable by a rotation axis parallel to the ascending direction. Furthermore, the loading platform can also be provided with a further axis of rotation perpendicular to the ascent direction. In this way, the loading platform can rotate the catalyst support object upside down, for example, immediately after the slurry is introduced into the support object. Furthermore, the loading platform can move the catalyst support object to the next processing station by unsteady motion, for example by movement of a turntable. In particular, the method and apparatus of EP 08161892 can be used for supporting and transporting catalyst support objects.

  The sealing element has elastic properties and the sealing material is an elastic material such as silicone, rubber, or other elastic polymer. Further, the sealing element can include a spring or tension element combined with an elastic or rigid component. This provides a direct contact between the sealing element and the input end, all around the input end (thus completely covering the periphery of the input end). In addition, when the periphery of the input end is covered with an impermeable element, these properties of the sealing element provide a fluid seal around the input end.

  According to the invention, the sealing element extends radially in a direction inclined to a plane (where the upper periphery of the sealing element extends) towards the center of the ring shape of the sealing element. The sealing element is preferably tapered towards the center of the ring shape, thereby providing a sealing element having a cross-section that tapers towards the center of the sealing element. The basic shape of the sealing element is applied to the cross section at the end of the catalyst support body and can be circular, oval, polygonal, or other shapes.

  According to a particularly preferred embodiment, when the sealing element covers the periphery of the input end, the inner end of the sealing element surrounding the carrier object is aligned (aligned) with the plane in which the input end extends. In other words, if the periphery of the input end is covered by a sealing element, the part of the sealing element used to contact the outer surface of the carrier object is at the peripheral edge (peripheral edge) of the carrier object at the input end. It is preferable to align. According to this embodiment, the periphery of the input end is covered by the inner peripheral edge of the sealing element, ie the inner tip of the sealing element. In this regard, the term “tip” refers to the innermost portion of the sealing element that extends along a closed perimeter line. Instead, the term “chip” refers to a sealing element that extends along a closed strip in the form of a cylinder (ie, the shape of the area of the outer surface at a location near the input end of the catalyst support body that ends at the input end). The innermost part is shown. If the tip extends along a closed line defined by the input end, the inner part of the sealing element and the tip are directed towards the peripheral edge of the carrier object, or the tip is Thus, when extending along the cylindrical area of the outer surface of the catalytic body, the inner part of the sealing element and the tip are oriented towards the plane in which the input end extends. Thus, according to the method of the present invention, the catalytic body and the sealing element are moved relative to each other until the input end is aligned (aligned) with the inner peripheral tip of the sealing element. This provides a step of sealing the outer edge of the input end before the slurry is guided into the catalyst body or the input end contacts the slurry. Similarly, the loading platform assembly or coating station of the present invention is used to perform the operations described above (ie, the sealing operation that aligns the tip / tip region of the sealing element with the input end). This alignment is preferably maintained during the entire process of guiding the slurry to the input end or during the entire process of contacting the input end with the slurry. For this purpose, the loading platform assembly or coating station of the present invention comprises a stopper element, or actuating device, or control device (these are the alignment of the peripheral edge defined by the inner tip and the input end of the sealing element) To ensure).

  The present invention can be carried out using the apparatus and method described in EP08161892. In particular, the coating process and the coating station described herein can be performed by the coating and coating station described in EP08161892. Furthermore, the components (parts) for applying a vacuum to the pan, the loading platform, the lifting device and the catalyst support body can be performed by means of the respective components disclosed in EP 08161892. Furthermore, the slurry can be prepared according to the coating station shown in EP08161892. Preferably, the loading platform is provided by the loading platform and turntable described in EP 08161892. In particular, the coating method, loading platform, and coating station of the present invention can be combined with the processing and placement apparatus and method disclosed in EP08161892.

FIGS. 1 a-1 d are schematic views showing the coating station of the present invention in order to illustrate the method according to the present invention. 2a and 2b are schematic views showing a top view and a cross-sectional view of the inventive sealing element. Figures 3a, b are cross-sectional and perspective views of a particular embodiment of the present invention. FIG. 2 shows a specific embodiment of a coating station according to the invention with a loading platform according to the invention. FIGS. 5a-c schematically show a sealing element in contact with a catalytic object according to a preferred embodiment of the invention.

(Detailed description of the drawings)
FIGS. 1 a-d show a catalyst carrier object 10 held by a loading platform 20. The carrier object has a cylindrical shape (cylindrical shape) having two end faces, which are depicted as horizontal lines in FIGS. The loading platform 20 holds the carrier object on the outer surface (extending between the ends). In FIGS. 1a-d, only the contact elements of the loading platform 20 are shown schematically (symbolic). The arrangement shown in FIGS. 1 a-d further includes a sealing element 30 below the open input end 10 a of the catalyst carrier body 10. In addition, a pan 40 (with a slurry 42 disposed within the pan 40) is disposed below the carrier object 10 and the sealing element 30.

  In the first step shown in FIG. 1a, the carrier object 10 is held by the loading platform 20 (at a predetermined distance above the sealing element 30 and the slurry 42). The sealing element 30 is raised to reach the position shown in FIG. In this position, the sealing element covers the entire periphery of the input end 10a. This can be done by raising the sealing element or the sealing holder holding the sealing element. In FIGS. 1a to 1d, only the sealing element 30 is shown symbolically, and the other parts of the cover mechanism including the sealing holder are described for example in FIGS. 4a, 4b and 5.

  After covering the periphery of the input end 10a with a sealing element 30, as shown in FIG. 1b, the pan 40 containing the slurry 42 is raised towards the carrier body 10, whereby the surface provided by the slurry and the slurry itself It contacts the input end 10a (and part of the sealing element 30). From FIG. 1 c, it can be seen that the outer surface surrounding the catalyst support body 10 is not in contact with the slurry 42, and in particular, the portion above the periphery of the charging end 10 a is not in contact with the slurry 42. However, at the same time, the entire charging end 10a of the carrier object 10 is immersed in the slurry.

  In the next step shown in FIG. 1d, a vacuum is applied to the release end 10b of the carrier object 10 (opposite to the input end 10a). The end 10 b (opposite to the input end 10 a) of the carrier object 10 is open (opened), and is connected to the released input end 10 a by the internal passage of the carrier object 10. A movable vacuum hood 50 is lowered over the catalyst carrier object 10 to partially surround the carrier object 10 and temporarily surround the discharge end 10b. The vacuum hood 50 is in contact with the loading platform 20, and the volume portion above the discharge end 10 b is a vacuum hood 50, a sealing connection (closed connection) between the vacuum hood 50 and the loading platform 20, and the loading platform 20 and the carrier object 10. The sealing connection between the outer surfaces is surrounded by this outer surface located on the upper side of the loading platform 20 and the outer end 10b. Therefore, the vacuum is applied to the discharge end 10 b in the vacuum hood 50 connected to the vacuum pump 52. Due to the pressure balance and due to the connection in the internal passage of the carrier object 10, the slurry 42 is drawn into the carrier object 10 via the release input end 10a. In particular, the slurry 42 is drawn through the ring-shaped sealing element 30 and through the entire cross section of the input end 10a. In this way, a predetermined amount of slurry 42 disposed in the pan 40 is drawn into the support body, thereby covering the inner surface (not shown) provided by the internal passages of the catalyst support body 10. However, during this step of guiding a predetermined amount of slurry 42 to the inside of the catalyst support body 10, the slurry is not transferred around the outer surface of the support body 10. This is because the sealing element 30 blocks (prevents) the slurry 42 at the peripheral portion of the input end 10a. In this way, a predetermined amount of slurry is guided inside the catalyst support body, however, the outer peripheral surface of the catalyst support body 10 is not soiled. In particular, the portion of the peripheral outer surface of the support body 10 that is located below the surface of the slurry in the pan 40, ie the lower part of the catalyst support body 10 immersed in the slurry, does not contact the slurry. . This is because the sealing element 30 covers and protects the outer peripheral surface while the charging end 10a is immersed in the slurry.

  After the process of guiding a predetermined amount of slurry 42 into the carrier body 10 is completed, the vacuum provided by the pump 52 is terminated and by raising the vacuum hood from the loading platform 20 (similar to FIG. 1c). The vacuum hood 50 is released. Then, as shown in FIG. 1b, the pan 40 is lowered. Next, by lowering the sealing element 30, the sealing element 30 is removed from the periphery of the insertion end 10a. It can be seen from FIGS. 1 a-1 c that the pan 40 is raised and lowered at a distance greater than the distance by which the sealing element 30 is raised and lowered. This ensures that the sealing element 30 contacts the slurry only when needed, ie, only when the input end 10a is immersed in the slurry 42 as shown in FIG. 1d. In addition, this ensures that the lowering of the sealing element 30 does not cause contact between the sealing element 30 and the slurry 42. The parallel movement (down and up) of the sealing element 30 overlaps or the operation of the pan 40 (if the input end 10a is in contact only with the slurry and the sealing element 30 covers the periphery of the input end 10a) Can be done during (down and up).

  In this alternative embodiment, the pan 40 is fixedly placed and the loading platform 20 lowers and raises the carrier object 10 (as shown in FIGS. 1a-1d). In such embodiments, the lifting mechanism of the sealing element 30 can be active or passive. In particular, the lifting mechanism that moves the sealing element can be a passive mechanism that includes a spring that biases the sealing element 30 toward the carrier object 10. In this embodiment, the carrier object is lowered towards the pan 40 and contacts the sealing element 30. After the sealing element 30 contacts, the periphery of the input end 10a, ie the peripheral edge of the input end, is (the force that the sealing element urges towards the carrier material 10 is between the sealing element 30 and the periphery of the input end 10a. While maintaining contact), maintain contact with the sealing element 30. When the descent process is continued (while ensuring that the spring force exerted on the sealing element 30 covers the periphery of the input end during the entire immersion process), the sealing element 30 It is immersed in the slurry 42 together with the end 10a.

  2a and 2b show the most preferred embodiment for carrying out the present invention.

  In FIG. 2a, the sealing element used in accordance with the present invention is shown in a top view. The sealing element has the shape of an oval ring. The inner periphery of this ring shape is applied to the outer shape of the catalyst support body to be coated. Accordingly, the shape of the sealing element, in particular the shape of the inner periphery of the sealing element shown in FIG. 2a, corresponds to the outer shape of the carrier object. Due to the elastic properties of the sealing element, the inner cross section of the sealing element is preferably slightly smaller than the catalyst support body (at the input end of the catalyst support body). In FIG. 2a, a contact line is shown as a dashed oval line, which shows the contact area where the periphery of the input end contacts the sealing element. The outer periphery of the sealing element shown in FIG. 2a has elastic properties and is held by a sealing holder (not shown).

  The inner periphery of the sealing element shown in FIG. 2a surrounds the release part (opening part) of the sealing element. When the input end is immersed in the slurry and a vacuum is applied to the discharge end of the catalyst support body, the slurry can be guided to the input end and the inside of the catalyst support body through this release portion. it can. In FIG. 2a, the center of the sealing element is arranged in the center of this release part and is marked with a cross. The longitudinal (longitudinal) axis of this sealing element extends perpendicular to the projection plane of FIG. 2a and extends through the center of the sealing element.

  In FIG. 2b, the sealing element of FIG. 2a is shown as a cross section along the line A shown in FIG. 2a. The sealing element 130 shown in FIG. 2b includes an outer ring 130a and a lip 130b (the lip 130b is connected to the outer ring 130a and extends inward). In particular, the lip extends towards the longitudinal axis L (corresponding to the cross shown in FIG. 2a). Furthermore, the lip 130b is inclined to the plane P1 (the outer rim of the sealing element 130a extends along the plane P1). The inclination angle is indicated by α. The innermost edge of the lip 130b, that is, the inner periphery of the sealing element 130, extends into a plane P2 parallel to the plane P1. Accordingly, the plane P2 is separated from the plane P1 by a distance d (corresponding to the tilt angle α).

  The contact line shown in broken lines in FIG. 2a corresponds to the contact edge C shown in FIG. 2b. The contact point C depends on the cross section of the carrier object covered by the sealing element shown in FIG. 2b and is preferably arranged in the inner part of the lip 130b. FIG. 2b has the same orientation (orientation) as FIGS. 1a-1d, the lip 130b extends towards the pan, and the carrier object is defined by the upper surface of the lip 130b and the upper part of the lip Can be inserted over the surface.

  In FIG. 2b, the lip 130b and the outer rim 130a are shown as integral elements. Further, the sealing holder (with the outer rim 130a attached to the sealing holder) is not shown in FIG. 2b. The sealing holder, or at least a portion thereof, the outer rim 130a, and the lip 130b can be formed as an integral element. Alternatively, these sections can be provided as individual elements attached to each other. A part of the sealing holder (not shown) is preferably made of a hard material and provided with a contact element to which the inner part of the sealing holder is connected. In this case, the inner sealing holder, the outer rim 130a, and the lip 130b are provided as one element of the elastic material. Usually, the lip is made of an elastic material. In addition, the outer rim 130a also has elastic properties and is made of an elastic material. It is preferred to use silicone. In addition, other elastic materials such as elastic polymer materials and rubbers can be used. In certain embodiments, an upper and / or lower layer of impervious material is disposed on the upper and / or lower surface of lip 130b, and preferably on the upper side of outer rim 130a, and / or Located on the lower surface. According to one embodiment, the entire sealing element is made of one material and is integrally formed, preferably together with the inner part of the sealing holder. Preferably, the material is impermeable to liquids, particularly slurries or components thereof. In other embodiments, the sealing element is made of a permeable material or has a permeable structure such as foam. In this case, the impermeable layer is disposed on the sealing element, in particular on the upper, lower or both surfaces of the lip 130b.

  The angle α defining the inclination (the lip 130b extends at this angle) is at least 0 ° and less than 90 °. Preferably, α is at least 10 °, 20 °, 30 °, 45 ° or 60 °. Furthermore, α is preferably 85 °, 80 °, 70 °, 60 °, or 45 ° or less. In a particularly preferred embodiment, α is in the range of about 45 ° to 85 °, preferably in the range of 60 ° to 80 °, and in a particularly preferred embodiment, at least 65 ° and not more than 75 °. is there. In the most preferred embodiment, α is about 70 °.

  The ratio between the distance d and the diameter of the sealing element is preferably at least 0.1 and 0.5 or less, preferably at least 0.15 and 0.3 or less. In a particularly preferred embodiment, this ratio is in the range of 0.2 to 0.3, for example about 0.25. The diameter of the sealing element is defined as the mean diameter, minimum diameter, or maximum diameter of the curve, thereby defining the position where the lip 130b is adjacent to the outer rim 130a. In this regard, the rim 130a extends along a plane perpendicular to the longitudinal axis (longitudinal axis) and the lip is inclined with respect to this plane.

  In FIG. 3a, a particular embodiment of a sealing element according to the invention is shown in cross section. The sealing holder 232 surrounds the sealing element 230 all around, and the sealing element 230 has an outer rim 230a and a lip 230b. The inner lip 230b is inclined at an angle of about 70 ° with respect to a plane in which the rim 230a and the sealing holder 232 extend. The outer rim 230a and the sealing holder 232 extend radially with respect to the longitudinal axis L. The sealing holder 232 is made of a hard material such as a steel sheet. The inner edge of the steel sheet is fitted in the groove of the outer rim 230a (extending outward from the longitudinal axis). In this way, the sealing holder 232 is attached to the sealing element 230. Since the sealing element 230 is made of an elastic material, the sealing element can be replaced. This replacement can be done by deforming the sealing element located in the sealing holder and releasing the connection formed by the groove of the outer rim 230 a and the inner edge of the sealing holder 232. Similarly, a new sealing element can be introduced by deforming the inner edge of the sealing holder and introducing it into the groove of the outer rim 230a. The lip 230b is directly connected to and integrally formed with the outer rim 230a and extends toward the longitudinal axis L and the pan (not shown). Therefore, the direction (direction relationship) in FIG. 3a corresponds to the direction (direction relationship) in FIGS. From FIG. 3a it can be seen that the lip tapers along the direction of extension, ie in the longitudinal direction L (and towards the pan).

  A second groove is provided in the base portion of the lip 230b, thereby allowing deformation of the lip at the base portion, that is, turning operation within the rotation axis at the base portion of the lip. The groove located in the base part of the lip is located opposite the groove located in the outer rim 232a (extending outward towards the sealing holder 230). The release portion (opening) 234a defined by the tip (tip) of the lip is smaller than the release portion defined by the base portion of the lip 230b adjacent to the outer rim 230a. In this way, the catalyst carrier object can be introduced into the release part 234b at least at its input end. The release provided by the inner surface of the lip 230b is also tapered (due to the inclination of the lip 230b) so that the periphery (not shown) of the input end of the catalytic object is provided by the lip 230. Fits. Due to the elastic properties of the lip 230b, the periphery of the input end is reliably covered by the lip 230b. The cross section of the input end of the carrier object (not shown) is smaller than the release 234b (to introduce the input end into the sealing element) and to cover the periphery of the input end (in the inner section of the lip 230b) B) larger than the release portion 234a.

  The sealing holder is connected to a lifting mechanism for moving the sealing element along the longitudinal axis L. The lifting mechanism preferably includes individually controllable actuators, or in certain embodiments in which the loading platform can move along the longitudinal direction L, a spring, or other biasing element (hydraulic, Aerodynamic, electromagnetic, or gravity based) is included to bias the sealing element against the periphery of the input end as the input end is lowered toward the pan.

  FIG. 3b shows a perspective view of the elements shown in FIG. 3a. The direction (direction relationship) does not correspond in FIGS. 1a to 1d, 2b or 3a. The direction arrow O faces the pan direction. The sealing element 230 is surrounded by the inner edge of the sealing holder 232, and the sealing holder 232 is provided with a further attachment element 234 (for example for screwing the sealing holder and connecting it to the lifting mechanism). Yes. The sealing element includes a lip 230b, which is adjacent to the outer rim 230a of the sealing element. The sealing element 230 is an insert (insertion portion) integrally formed of an elastic material such as silicone. The outer rim 230a includes a groove extending outward, and the inner edge of the sealing holder 232 is fitted into the groove.

  A second groove, which is opposite to the groove in the outer rim 230a, extends inward and is located in the base portion of the lip 230b. This allows for high flexibility when a force is applied to the lip 230b. Lip 230b has a truncated conical shape, as shown in FIG. 3a, and a longitudinal axis that coincides with the longitudinal axis L shown in FIG. 3a. Further, the conical shape with the tip cut off is tapered in the longitudinal direction. As a result, the tip of the lip 230b (in which the cross-section is minimized within the truncated cone), when the carrier object is (partially) inserted into the sealing element 230, the slurry is introduced into the end. Provides a release (opening) for introduction into the interior. Further, the wall thickness decreases along the tapered cone tapering direction (this forms the lip 230b of the sealing element 230).

  The sealing element and the sealing holder shown in FIG. 3b correspond to the sealing holder and the sealing element shown in FIG. 3a. However, the tilt angle of the lip relative to the plane (where the sealing holder extends) does not coincide with the angle shown in FIG. 3a for descriptive reasons.

  Usually, the sealing element is in the form of a frustum, in particular, or includes a truncated conical part (lip), said part (lip) tapering the truncated cone Along the direction, the wall thickness preferably decreases. In a preferred embodiment, the sealing element further includes an outer rim extending along a plane (where the truncated cone rises). The part formed in a truncated cone is used to receive the peripheral part, i.e. the peripheral edge of the input end of the catalyst support body, and the section extending along the base plane of the truncated cone is , (Eg by providing a groove extending outwardly towards the sealing holder surrounding the sealing element).

  FIG. 4 shows a coating station according to the invention. The coating station includes a loading platform 320 that holds a catalyst carrier 310. The sealing element 330 is held by a sealing holder 332, and the sealing holder 332 is connected to a lifting mechanism 336. The sealing holder 332 is connected to the lifting mechanism 336 via a quick-release fastener. The lifting mechanism includes an actuator section 336a that includes a spindle rod. The coating station of FIG. 4 further includes a pan 340 on which a receiving pan 344 is disposed. The receiving pan 344 receives the slurry through the overrun 346.

  The coating station further includes a movable vacuum hood 350 that can be lowered from the loading platform 320 onto the lifting / loading platform 320. The vacuum hood is movable and is coupled to a vacuum lifting mechanism 354 (held by support 322). In addition, the coating station includes a swivel device 356. The pivoting device 356 is coupled to the vacuum hood 350 via a vacuum lifting mechanism 354 (to essentially pivot the vacuum hood about the longitudinal axis of the loading platform 320 and pan 340).

  The coating station shown in FIG. 4 includes additional lifting mechanisms to raise and lower the pan 340. The pan lifting mechanism 348 is coupled to the same support that is provided with the lifting mechanism for the sealing element. Accordingly, the coating station of FIG. 4 includes three lifting devices: a first lifting mechanism (note, 336a, 336) for raising or lowering the sealing holder, to which the sealing element is connected; pan A second lifting mechanism (note, 348) for raising and lowering 340, and a third lifting mechanism (note, 354) for raising and lowering the vacuum hood 350. A first lifting mechanism for moving the sealing element and a second lifting mechanism for moving the pan are provided on the same support via individually controllable actuators. Another individual support is used to hold a third lifting device that raises and lowers the vacuum hood 350. The third lifting mechanism 354 is connected to the turning device 356. The swivel device 356 is essentially arranged to swivel the vacuum hood 350 on a rotation axis provided on the longitudinal axis of the pan, loading platform and sealing element. The third lifting device is connected to the support 322.

  The vacuum hood 350 includes an opening (opening) 350 a for applying a vacuum to the inside of the vacuum hood 350. The release part 350a is applied to connect a vacuum pump (not shown).

  The coating station shown in FIG. 4 is provided in accordance with the coating station described in EP 08161892, except for the sealing element, the sealing holder and other components for the sealing element, for example a lifting mechanism for raising and lowering the sealing holder. Can do. Furthermore, the coating station according to the invention can be connected to the processing station described in EP 08161982. In order to rotate the carrier object (and loading platform) upside down, the loading platform is preferably held by a pivoting mechanism. The turning mechanism can be synchronized (synchronized) with another turning mechanism for turning the vacuum hood. In this way, the vacuum hood can perform a pivoting action when the carrier object is turned upside down and the vacuum hood is not fully released from the carrier object. Such a mechanism is described in EP 08161829 and can be coupled to the present invention.

  Typically, all lifting mechanisms can include guide rods and actuating elements, such as pneumatic (gas) or hydraulic (liquid) pistons, or electromagnetic actuators. The support to which the lifting mechanism of the vacuum hood is connected is preferably connected to a support having a loading platform 322 and a sealing holder 336. Preferably, an electrical servo drive is used to drive the lifting mechanism, whereby each lifting device is driven by an associated individual servo drive. A gear mechanism, such as a worm gear, or a spindle gear assembly can be used to connect the lifting mechanism to the respective servo device.

  FIGS. 5 a-c show in schematic cross section a sealing element in contact with a catalyst support object according to a preferred embodiment of the present invention. In FIG. 5a, the inner section of the sealing element 30a is in contact with the cylindrical (cylindrical) region of the catalyst support body 10 (the cylindrical region is a small strip that ends at the input end 10a). The ends of the sealing elements are aligned (aligned) with the input ends. In this way, the amount of slurry remaining in the catalyst sealing element 10 is minimized. At the same time, this alignment ensures a seal around the input end when immersed in the slurry. The embodiment shown in FIG. 5a includes an elastic sealing element (section) 30a into which the input end portion of the catalyst carrier object 10 is inserted. The sealing element (inner section thereof) is deformed by the inserted part of the catalyst sealing element 10 and extends along the shape of the outer surface of the catalyst support body. The sealing element 30a extends partially along the catalyst sealing element 10 and ends at the input end 10a. The tip portion (tip portion) of the sealing element 30a bends along the outer surface of the catalyst sealing element 10 (this is made possible by the elastic properties of the sealing element and during insertion of the catalyst sealing element 10 into the sealing element). Generated by the force generated by The tips of the sealing elements are aligned (aligned) in the plane in which the input end 10a extends (as shown as a flat end in FIG. 5a). In the method of the present invention, this is achieved by mechanical connection between the loading platform 20 and the sealing element 30a (or sealing element holder, not shown) in the loading platform of the present invention or at the coating station of the present invention. Can be provided. The mechanical connection can be provided by a stopper, which allows an accurate alignment between the tip of the sealing element 30a and the input end 10a. Instead of a mechanical connection, a mechanical connection, an electrical or electronic connection device (connecting at least one actuator providing the operation with another actuator or sensor) can be used, Using a suitable control device, the sealing element 30a and the input end 10a are aligned. The embodiment of FIGS. 5b and 5c preferably provides such a connection.

  FIG. 5b shows an embodiment similar to FIG. 5a, in which the input (to cover the outer surface of the catalyst sealing element 10 against slurry (not shown)) is shown. The sealing element 30b is aligned with the input end 10a (for the case where the end is inserted into the sealing element 30a). The catalyst carrier object 10 is held by a loading platform 20. In contrast to the embodiment shown in FIG. 5 a, the sealing element 30 b shown in FIG. 5 b does not include a tip portion (tip portion) bent by the catalyst sealing element 10. Instead, the tip of the sealing element 30b has a cylinder shape adapted to the outer shape of the catalyst carrier object 10 at the input end 10a of the catalyst carrier object 10. The tip of the sealing element is essentially not deformed by the inserted catalyst support body 10. The sealing element 30b includes a tip region adapted for direct contact with the outer surface of the catalyst support material 10 along the region of the cylindrical strip. Upon insertion, the sealing element 30b extends to the edge. This is in contrast to the sealing element of FIG. 5a, which includes a tip region that bends significantly upon insertion of the catalyst support body. The width of the stripe is preferably 2% to 10% of the inner diameter of the sealing element. In particularly preferred embodiments, the width is 2-10 mm, 3-7 mm, and most preferably about 5 mm. In an embodiment in accordance with the best mode of carrying out the invention, the sealing element overlaps flush with the outer surface of the catalyst support object at the input end of the support object, and about the support object and the cylindrical sealing surface. The contact is at a height of 5 mm and a diameter of 30-150 mm, preferably 50-10 mm, and most preferably 70-90 mm, for example about 84 or 85 mm. The diameter values are for the diameter of the sealing element with no catalyst support body inserted, i.e. unloaded, which are shown in FIGS. 1a-d, 2a, b, 3a, b and 5b. , C is substantially the same as that for the loaded state (stress).

  Regarding the best mode of carrying out the present invention, FIG. 5b shows the best mode for providing the alignment of the sealing element with respect to the input end, and the embodiment of FIG. 5c is shown and described in FIGS. Used in the most preferred manner and has the most preferred geometry of the embodiment of FIG. 2b.

  In FIG. 5c, an embodiment similar to that of FIGS. 5a and 5b is shown. Similar to the embodiment of FIGS. 5 a and 5 b, the tip of the sealing element 30 c is aligned with the input end 10 a of the catalyst carrier object 10. However, in contrast to FIG. 5 a and similar to FIG. 5 b, the sealing element 30 c includes a tip region (tip region) that is only slightly deformed (at the edge) by the inserted catalyst carrier object 10. Further, in contrast to the embodiment of FIGS. 5a and 5b, the sealing element contacts the catalyst support body (ie the outer surface at the input end 10a of the catalyst support body 30) only in a small area. This small region is a region extending around the periphery of the catalyst carrier input end 10a, and this region can be approximated by a closed line, for example, a circle. The width of this small “cylindrical” region is defined by the elastic properties of the sealing element and the amount of expansion made by insertion of the catalyst support body 10.

  Similar to FIG. 5 b and in contrast to FIG. 5 a, the tip of the sealing element 30 c of FIG. 5 c is directed to the outer surface of the catalyst support body 10. Further, similar to FIG. 5 b, the sealing element 30 c (inner part) of FIG. 5 c is inclined to the outer surface of the catalyst support body 10. In contrast, the sealing element of FIG. 5a (inner part thereof) extends along the outer surface of the catalyst support body 10 and only the outer part of the sealing element 30a is inclined to the catalyst support object.

  5a and 5b have a tip with a cylindrical shape. The contact area between the sealing element and the outer surface is a strip surrounding the catalyst support body 10. The width of the strip is defined by the width of the chip (Note, FIG. 5b) or the degree of deformation that occurs due to the elastic properties of the sealing element and during insertion of the catalyst support body into the sealing element (Note, FIG. 5a). In FIG. 5 c, the contact area has a generally closed line shape (defined by the cross section of the catalyst support object 10). The term line does not imply a mathematical definition of a set of zero-width points. Rather, the term line clearly indicates the width of the contact area (which is considerably narrower than the width of the strip described for FIGS. 5a and 5b). The width of the line defining the contact area between the sealing element 30c and the catalyst carrier object 10 in FIG. 5c depends on the elastic properties of the sealing element 30c and the degree of deformation that occurs during the insertion of the catalyst carrier object 10. It is prescribed. The degree of deformation in FIG. 5a is considerably greater than the degree of deformation in FIGS. 5b and 5c.

10, 310 Catalyst carrier object 10a, 10b Catalyst carrier object inlet / outlet 20, 320 Loading platform 322 Support 30, vac-lifting mechanism 30, 30a-c, 130,
230, 330 Sealing element 130a, 230a Sealing element outer rim 130b, 230b Sealing element lip 232, 332 Sealing holder 234a, b Sealing element release (opening)
234 Connecting assembly 354 for sealing holder Lifting mechanism 356 for vacuum hood Swing mechanism 336 for vacuum hood Lifting mechanism 336a Actuator section 40, 340 Pan 344 Receiving pan 346 Overrun 348 Lifting mechanism 42 for pan Slurry 50, 350 Vacuum hood 350a Release part 52 for connecting a vacuum pump Vacuum pump L Longitudinal axis (vertical axis)
P1, P2 Upper / lower plane C of sealing element Contact line α between sealing element and closing end α Inclination angle A Insertion plane O Guide direction

Claims (15)

A method of coating a catalyst support object comprising:
Providing a catalyst support body and slurry disposed in a pan;
Introducing the open input end of the catalyst support body into the slurry; and then guiding a predetermined amount of slurry through the open end into the interior of the catalyst support body;
Including
At least a portion of the peripheral edge of the input end is coated with an impervious sealing element during the step of guiding a predetermined amount of the slurry through the open end, so that the outside of the periphery of the slurry and the catalyst support body Contact with the surface is prevented at the input end and the slurry is applied to the inner surface of the catalyst support body from the input end.   Further, the method includes the step of introducing the input end of the catalyst carrier object into the sealing element before the step of introducing the input end into the slurry or at the beginning of the step of introducing the input end into the slurry. The method of claim 1.   When the charging end is immersed in a slurry arranged in a pan together with the sealing element, the charging end of the catalyst support object is pressed onto the sealing element or the charging end of the catalyst support object is pressed into the sealing element The method according to claim 1 or 2, characterized in that it is surrounded by.   After the step of guiding the slurry is completed, or when the step of guiding the slurry through the input end is completed, and when the input end and the sealing element are removed from the slurry disposed in the pan, or after the sealing element 4. The method according to any one of claims 1 to 3, wherein the input ends are separated from each other.   In the step of guiding a predetermined amount of slurry, a pressure difference is applied between the input end of the catalyst carrier object and the discharge end of the catalyst carrier object, wherein the discharge end is connected to the input end and the fluid by a plurality of passages. The pressure difference is applied such that a predetermined amount of slurry flows from the input end through the inner release of the sealing element to the discharge end. 5. The method according to any one of 4 above. During the introduction process, the loading platform is used to releasably hold the catalyst carrier object, the distance between the loading platform holding the catalyst carrier object and the pan is reduced, and the input end of the catalyst carrier object is within the pan. Dipping in the disposed slurry; and
The periphery of the input end comprises being covered with a sealing element, wherein
The sealing element is connected to a sealing holder, which introduces the input end and prior to and during the process of guiding a predetermined amount of slurry through the input end, the sealing element above the periphery of the input end. And, further,
The sealing holder separates the sealing element from the input end after the step of guiding and after the contact between the input end and the slurry arranged in the pan is finished. The method according to claim 1. A loading platform used for releasably holding a catalyst carrier object, and a cover mechanism having a sealing holder and a ring-shaped sealing element provided on the sealing holder;
The cover mechanism further includes a first lifting mechanism coupled to the sealing holder;
A loading platform assembly, wherein the first lifting mechanism provides the sealing holder with a direction of movement relative to the loading platform along a longitudinal axis of the sealing element. A coating station for applying a predetermined amount of slurry to the inside of the catalyst support body,
Comprising a loading platform according to claim 7, further comprising a pan in which the slurry is disposed;
The coating station provides a relative direction of movement between the pan and the loading platform in order to immerse and remove the released input end of the catalyst support body held by the loading platform in the slurry located in the pan. Having a second lifting mechanism;
The coating station characterized in that the first lifting mechanism is coupled to the second lifting mechanism by a mechanical or electrical synchronization device.   9. The first lifting mechanism coupled to the sealing holder includes an individual actuator, the individual actuator being controllable separately from any actuator of the pan or loading platform. Coating station as described in. The sealing element is in the shape of an oval, circular or polygonal ring and includes a lip extending along the circumference of the sealing element
The lip is inclined and extends away from the loading platform;
10. The coating station according to claim 8, wherein the lip is used to contact the entire circumference of the outer surface of the catalyst support body at the input end of the catalyst support body. And further includes a loading platform and a movable vacuum hood that is used in sealing contact on the upper side of the loading platform and provides a vacuum to the volume enclosed by the hood and the upper side of the loading platform,
The second lifting mechanism is coupled to the pan so that the pan moves away from the loading platform and under the loading platform along the direction of relative movement between the pan and the loading platform. The coating station according to claim 8, wherein the coating station is controllably moved. A synchronization device is provided for adjusting the operation of the first lifting mechanism and the second lifting mechanism, whereby
Actuation of the second lifting mechanism between the pan and the loading platform if the first lifting device does not constitute a sealing contact between the sealing element and the catalyst carrier object held by the loading platform Further access beyond a preset distance due to the is prevented, and the first lifting mechanism does not constitute a sealing contact between the sealing element and the catalyst carrier object held on the loading platform In some cases, when the second lifting mechanism is activated, the approaching action of the sealing device to the closing end is initiated and the distance between the pan and the loading platform is reduced. The coating station of any one of -11. A second lifting mechanism is used to move the pan from and to the loading platform along the ascending direction;
9. The loading platform is fixedly arranged for movement along the ascent direction, and the loading platform is pivotally supported by a rotation axis parallel to the ascent direction. The coating station according to any one of -12.   14. A coating station according to any one of claims 8 to 13, characterized in that the material of the sealing element is a resilient material, preferably silicone, rubber or an elastic polymer.   The sealing element expands radially, toward the center of the ring shape, in a direction inclined with respect to the plane, and the outer periphery of the sealing element extends, the sealing element being tapered toward the center of the ring shape The coating station according to any one of claims 8 to 14, characterized in that

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